I Know when I wear a hat my head gets itchy too. I think it's cause your scalp is not getting enough circulation and the moisture makes it itch. I also would not use Head and Shoulders shampoo everyday, sometimes that makes the scalp worse, Also I would try not to wash your hair everyday.
I'm not gonna not wear hats cuz i like to wear hats. My hear texture, i don't really know how to describe it, and the main hat i wear is a flex fit hat so its kind of tight not really. I also don't use dandruff shampoo for nothing. During the day if i run my hand through my hair, i see all this stuff come off of it like dust or something. Im pretty sure its dandruff, what do you think?
It could be....unless you are using products that you're allergic to.
Try Scalpicin treatment. It's salicilic acid which will help in keeping the flakes down. It also helps with itching.
Do you wash your hat often enough? If you wear it daily, I would think once every few weeks would be good in a mild dishwashing detergent.
Do you brush your hair often? Do you blow dry it? Sometimes if you do that, it will give good circulation to the head. ARe you losing any hair? Have you had your thyroid checked out? Try and increase your vitamin B with a mixed B complex.
Do you remove your hat at all during the day? or is it an all day thing?
It's all a matter of perspective!